Preferential formation of al self-interstitial defects in gamma-TiAl under irradiation

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Date
2013-01-01
Authors
Voskoboinikov, RE
Lumpkin, GR
Middleburgh, SC
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Empirical dynamic calculations were used to observe a distinct increase in aluminium interstitial defects compared to titanium interstitial species remaining after a displacement cascade (even though Frenkel formation energies for both species were found to be similar). Thermodynamic data from static ab-initio models support this interesting result. Calculations were then used to determine whether these interstitials are free to move and therefore have the possibility of migrating to a surface where a passive Al2O3 layer can be formed. © 2012, Elsevier Ltd.
Description
Keywords
Aluminium, Titanium, Thermodynamics, Defects, Interstitials, Oxidation
Citation
Voskoboinikov, R. E., Lumpkin, G. R., & Middleburgh, S. C. (2013). Preferential formation of Al self-interstitial defects in gamma-TiAl under irradiation. Intermetallics, 32, 230-232. doi:/10.1016/j.intermet.2012.07.026
URI
http://dx.doi.org/10.1016/j.intermet.2012.07.026
 http://apo.ansto.gov.au/dspace/handle/10238/6373
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